Apparatus for assembling nail knobs



March 31, 1925- .1. a. Loy

FOR ASSEMBLING NAIL KNOBS APPARATUS Filed Aug. 6; 1923 Patented Mar. 31, 1925.

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UNITED STATES, PATENT OFFICE.

JOHN G. LOY, O'F CAREY, OHIO, ASSIGNOR TO THE FEDERAL PORCELAIN COMPANY,

. QF CAREY, OHIO, A CORPORATION OF OHIO.

APPARATUS FOR ASSEMBLING NAIL KNOBS.

Application filed August 6, 1923. Serial No. 656,108.

To all whom it may concern."

Be it known that I, JOHN G. Lor, a citizen of the United States, residing at Carey,

in the county of Wyandot' and State of Ohio, have invented certain new and useful Improvements in Apparatus for Assembling N ail Knobs, of which the following, is a specification, reference'being had therein to the accompanying drawing.

My invention relates to an apparatus for assembling nail knobs of insulating material.

It is the object of my invention to provide a machine for assembling nail knobs by which the several parts will be accurately assembled with the mininnunchance of breakage, at the maximum speed.

It is also my object to provide means of assembling small parts in their proper relationship to the remainder of the knobs,

so that they will be automatically positioned and centered, thus eliminating the diiliculty of accurately and rapidly handling such. parts which has been heretofore eX- perienced. g

It is my further object to provide a machine which will enable a plurality of operators to be used, and which will so time the movements of such operators that a predetermined minimum production will a lways be maintained, and a tendency to lag on the part of any one operator will be eliminated. I

Itis also my object to provide a mamay be performed by 1 is an endless chain passing over sprocket wheels 2 and 3, and actuated thereby. The

' chine in which, it necessary, two or more sprocket wl1eel'2 is mounted on the shaft 4, and the sprocket wheel 3 is mounted on the shaft 5. The sprocket wheel 2 has associated with it, mounted on the same shaft 4, a ratchet 6, the teeth ot-which are engaged by the pawl 7, which is maintained in engagement with the ratohetwheel by the spring 8. This pawl is pivoted as at 9 to the end of the rodlO, This rod or actuating arm 10 is eccentrically pivoted as at ,11 upon a crankwheel 12 turning in the direction of the arrow. This wheel is mounted upon an actuating shaft 13, driven from any suitable source -01? power. Also mounted upon thiscrankwheel12 is another actuating arm or link 14:, known as the hammer arm. At the lower end of this hammer arm 14 is pivoted, as at 15, a hammer 16, which is directed bythe guide 17 Thus the movement of the hammer and the step by step movement of the chain are synchronize The chain carries a series of metal plates or lags 18, 011 which are mounted cups 19. The bottom of the cup is tapered as at 20 to an annulardepression 21, in the cen-' ter of which is anaperture 22. V i p The purpose of the annular depression 21 is to receive and "position the small metal washer 23, which has an aperture 24 of smaller diameter than the diameter of the nail 25, so that the washer and. one knob element willbe retained in flat juxtaposition with'their openings aligned and properly presented to. the'nailing means. The porcelainportions of the knob are composedof an upper. half 26, having a lower corrugated face 2?,and a central aperture to receive the nail,designated .28. I

The lowerporcelain member is designated 29, and has wlre receiving depressions 30. It 1s also provided with a central passage way 31, for receiving the nail. This lower porcelain member is'provioled with an apron 32 surrounding an open base depression 33. This apron fits within the cupfllt).

Operation. The operator stationed op posite station A drops the small metal washer 23 in the depression 21, which centers .it. The washerrsettles into the reoess of its own weight, being directed there to by the sloping walls 20. This steel washer is so small, and usually irregular in size, that heretofore it has been a great problem to handleit.

At station :13 the operator places the lower porcelain half 29 in the cup. At station C the operator places the upper half of the porcelain in position, and at station I) the operator places the nail with the leather washer 34 thereon in the,position indicated, with the point of the nail resting in the hole in the steel washer in the bottom of the cup, as in Figure 2.

At station E .the assembly is brought beneath the hammer .16, which forces the nail downwardly through the washer, as in Figure 3. An .anvil. supports the chain and plate at this point.

The vcompletedassembly then passes over the sprocket wheel 2, and falls out of its own weight into the receiving hopper 36.

It .will be understood that I desire to comprehend within my invention such modifications as may be fairly embraced within it, and as unay be found necessary in adapting it to various conditions in the artin the course of the application of the invention.

:Having thus {fully described my invention, what I claiinas new, and desire to secure by Letters Patent, is:

'1. In amacliine for assembling nailknobs, a conveying means, means thereon for locat ing an inserted metal washer and a knob ,part having a ,central opening so that said washer and knob part will be in =fiat juxtaposition with their openings alined, and means .ifor lat-er forcing a nail-through said washer and said knob part.

2. l ra-machinetoriassembling nail knobs, a conveying means, means thereon ,forlocat mg an .inserted anetal washer and a knob Part having a centralopening, so that said washer and knob part .will 'be in flat juxtaposition .with their openings alined, and :JHGEUIS for forcing a nail through said washer and said knob part, said conveying meansbeing arranged to permit the assembled parts ;to be ejected.

3. ln-a machine tor assembling nail knobs, a travellingsupport, aseries of lagsthereon each adapted to receive and locate knob elements consisting of awasher and a lower member having a central opening so that said elements will be in ,flat juxtaposition with their openings aligned, and a hammer operating in the path of the lagsand means to actuate it to deliver blows upon a nail inserted in said knob elements.

l. In a machinefonassembling nail knobs, endlesschains constituting a travelling support. means of producing a step by stepmotion in said support,.aseries of lags on said serpen s sh adap #0 we lqwte in ,fi --i met. .esit en 'a th-thei iereaie al n d and discharge nail knob elements consisting oi? a washer and a lower member, and a hammer operatin in the path or the la s and means to actuate it to deliver blows upon a nail inserted in said knob elements.

5. In a machine for assembling nail knobs, an endless conveyor, means for imparting step by step movementto said conveyor, means on said conveyor for locating a plurality of parts of a nail knob with respect to one another so that said parts will be in flat uxtaposition with. their openings aligned, and means synchronized with said step by step mechanism for driving a nail through the several parts.

6. In amachine for assembling nail knobs. an endless conveyor mounted on sprocket wheels, a plurality of spaced supporting members located on said conveyor, each of said members having a cup, a tapered bot tom therein, an annular depression. in the base of said bottom, having an aperture thcrethrough, said cup being adapted to locate a portion of the nail knob in position, and the cut-away portion in the bot tom of the cup being adapted to receive and position a washer, and means adapted to drive a nail through the several parts oi the knob.

7. In amachine for assembling nail knobs, an endless conveyor ,mounted on sprock t wheels, a plurality of spaced supporting members located on said conveyor, each o't said membershaving a cup, a tapered bot- ;tom therein, an annular depression in the base of said bottom, having an aperture therethrough, said cup being adapted to locate a portion of the nail knob in position, and the cut-away portion in the bottom of the cup being adapted to receive and position washer, means adapted to drive a nail through the several parts of the knob, means to impart step by step movement to said conveyor, and-meanstosynchronize said step by step movement with the means to force the nail through the several parts.

8. In a machine "for assembling nail knobs. a lag comprising a general body having a cup-like interior with inclined walls in the bottom portion thereof, whereby a washer placed in the cup will descend to the bottom and wherebya'low-er knob membermay also be inserted in said lag.

9. In a machine for asseml'iling nail knobs. a lag composed of a general body h vine a cup-like interior with inclined walls in the lower portion. a washer seat at the base ot such inclination and an. opening extending from said seat through the lag, whereby a washerplaced in the cup will work down to the seat and whereby a lower knob member may be inserted 1n. the lag. and a nail be proyected through the lag into the washer to'be later forced beyond the lag.

10,111 ,a machine for assembling nail knobs, a travelling support, a series of lags secured thereto, an anvil and a hammer 1n the path of said lags, one below and the other above such path, each lag having a cup-like interior adapted to receive nail knob parts and to permit the passage through it of a nail proper, the anvil being adapted to drive it home.

' In testimony whereof, I affix my signature.

JOHN G. LOY. 

